JELLYFISH

Jellyfish are older than all of our ancient reptiles. Scientists believe they first swam in our oceans around 500 million years ago. There are more than 350 different species of jellyfish. Some are as tiny as a pinhead. They can be found in all of our oceans and sometimes in freshwater too.

Jellyfish have venomous tentacles that they use to capture their prey. Most jellyfish are harmless to humans, but a few including the box jellyfish can cause a painful sting. Sometimes baby fish will also live in jellyfish tentacles for protection.